﻿#region Copyright (c) 2003 - 2008, Andreas Mueller
/////////////////////////////////////////////////////////////////////////////////////////
// 
// Copyright (c) 2003 - 2008, Andreas Mueller.
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// which accompanies this distribution, and is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// Contributors:
//    Andreas Mueller - initial API and implementation
//
// 
// This software is derived from software bearing the following
// restrictions:
// 
// Copyright (c) 1994
// Hewlett-Packard Company
// 
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  Hewlett-Packard Company makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
// 
// 
// Copyright (c) 1996,1997
// Silicon Graphics Computer Systems, Inc.
// 
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  Silicon Graphics makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
// 
// 
// (C) Copyright Nicolai M. Josuttis 1999.
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
// 
/////////////////////////////////////////////////////////////////////////////////////////
#endregion
using System;
using System.Collections.Generic;
using NStl.Iterators.Support;
using NStl.Linq;
using NStl.Collections;
using NUnit.Framework;
using NUnit.Framework.SyntaxHelpers;

namespace NStl.NUnit.ContainerFixture.HashSet
{
    [TestFixture, Obsolete]
    public class EraseFixture
    {
        #region Setup/Teardown

        [SetUp]
        public void SetUp()
        {
            refCollection = new List<int>();
            hashSet = new Collections.HashSet<int>();
            for (int i = 0; i < 10; ++i)
            {
                hashSet.Insert(i);
                refCollection.Add(i);
            }
        }

        #endregion

        private Collections.HashSet<int> hashSet;
        private ICollection<int> refCollection;

        [Test]
        public void EraseAtPosition()
        {
            Collections.HashSet<int>.Iterator it5 = hashSet.Find(5);
            hashSet.Erase(it5);
            refCollection.Remove(5);
            Assert.That(refCollection, Is.EqualTo(hashSet));
        }

        [Test]
        public void EraseAtPositionWithEnd()
        {
            hashSet.Erase(hashSet.End());
            Assert.That(refCollection, Is.EqualTo(hashSet));
        }

        [Test]
        [ExpectedException(typeof (ArgumentNullException))]
        public void EraseAtPositionWithNull()
        {
            hashSet.Erase(null);
        }

        [Test]
        public void EraseKey()
        {
            Assert.That(hashSet.Erase(5), Is.True);
            refCollection.Remove(5);
            Assert.That(refCollection, Is.EqualTo(hashSet));
        }

        [Test]
        public void EraseKeyFails()
        {
            Assert.That(hashSet.Erase(42), Is.False);
            Assert.That(refCollection, Is.EqualTo(hashSet));
        }

        [Test]
        public void EraseKeyFailsKeyIsNull()
        {
            Collections.HashSet<string> mm = new Collections.HashSet<string>();
            mm.Erase((string) null);
        }

        [Test]
        public void EraseKeySucceedsKeyIsNull()
        {
            Collections.HashSet<string> mm = new Collections.HashSet<string>();
            mm.Insert(null);
            mm.Erase((string) null);
            Assert.That(mm, Is.Empty);
        }

        [Test]
        public void EraseRange()
        {
            List<int> content = new List<int>(hashSet.ToArray());

            ListTIterator<int> first = content.Begin() + 2;
            ListTIterator<int> last = content.Begin() + 4;

            content.Remove(first, last);


            Collections.HashSet<int>.Iterator hmFirst =
                (Collections.HashSet<int>.Iterator) hashSet.Begin().Add( 2);
            Collections.HashSet<int>.Iterator hmLast =
                NStlUtil.Advance<int, Collections.HashSet<int>.Iterator>(hashSet.Begin(), 4);

            hashSet.Erase(hmFirst, hmLast);

            Assert.That(hashSet, Is.EquivalentTo(content));
        }
    }
}
